Pinyin: Ma Huang  Chinese: 麻黄
Pharmaceutical: Herba Ephedrae
Taxonomy: Ephedra sinica seu intermedia seu equisetina
English: Ephedra Stem / Joint Pine / Joint Fir / Mormon Tea / Brigham Tea

Tastes: Pungent, slightly bitter, warm
Meridians Entered: Lung and Bladder

Actions & Indications:

1. Induces sweating and releases the Exterior
   Taiyang Stage Wind-Cold Invasion of the Lung, with anhidrosis, chills, fever, headache and a tight, floating pulse
2. Disseminates and facilitates Lung Qi, calms wheezing and stops coughing
   Wind-Cold Obstructs Lung Qi
3. Promotes urination and reduces oedema
   Externally generated oedema
4. Warms and disperses Cold pathogens
   Wind-Cold Bi
   Cold extremities (Reynaud's disease)
5. Breaks up concretions, firmness, accumulations and gatherings (Shen Nong Ben Cao Jing)
   Yin sores that are firm, deeply rooted and without a head

Standard Dosage: 1.5-9g in decoction to release the exterior, and 10-15g for the treatment of oedema. Maximum dose is 20g. Toxic dose is considered to be 30-45g but side effects and risks are possible at any dosage.
Cautions: It is prohibited to be used for patients with deficient dyspnea without blockage of the lung qi and should be used with caution for patients with hypertension and insomnia because ephedrine can stimulate central nervous system and raise blood pressure. The Shang Han Lun recommends removing the nodes and decocting Ma Huang first, scooping the foam from the top of the decoction. It has been argued this is to reduce the "vexing" effects although the efficacy of this is debated and rarely done today.

It should not be used in conjunction with MAOIs, central nervous system stimulants, alkaloids ergotamines and xanthines enhancing their effects by acting as a receptor level agonist.

In the UK the maximum daily dose permitted without prescription is 1.8g daily in three 0.6g doses. This makes it difficult to achieve a pharmacologically active effect and must be complemented with other herbs that release the exterior and expel Wind-Cold such as Gui Zhi, Jing Jie, Fang Feng and Zi Su Ye.

Huang Hua Zi (Sida cordifolia), more common in Ayurveda where it is known as Bala बला, also contains ephedrine at lower concentrations and has no legal restrictions placed on it by the UK MHRA. It is considered more cooling, Heat clearing and Damp draining without Exterior Releasing properties in Chinese medicine so best used as a substitute in Warm Diseases, especially Damp-Warm Disease, or supplemented with increased warm Exterior Releasing herbs like those described above.

Pinyin: Xing Ren  Chinese: 杏仁
Pharmaceutical: Semen armeniacae
Taxonomy: Prunus armeniaca seu mandshurica seu sibirica
English: Bitter Apricot Kernel

Tastes: Bitter, slightly warm, slightly toxic
Meridians Entered: Lung and Large Intestine

Actions & Indications:

1. Stops coughing and calms wheezing
   Coughs due to either Heat or Cold (depending on combination) Wind-Dry coughs (especially useful)
2. Moistens the Intestines and unblocks the bowels
   Constipation

Standard Dosage: 3-10g in decoction.
Cautions: It should not be overused for its slight toxicity. It should be used with cautions for infants and patients with diarrhea.

Pinyin: Yi Yi Ren  Chinese: 薏苡仁
Pharmaceutical: Semen Coicis
Taxonomy: Coix lacryma-jobi
English: Job's Tears / Chinese Pearl Barley

Tastes: Sweet, Bland, Slightly Cold
Meridians Entered: Spleen, Stomach and Lung

Actions & Indications:

1. Strengthens the Spleen and resolves Dampness
   Dampness Stagnation or Spleen Deficiency Dampness with diarrhoea, leg Qi, painful urinary dribbling
   Damp-Warmth (treats root and manifestations)
2. Expels Wind-Dampness and relieves pain
   Wind-Damp Bi (increases joint mobility and decreases spasms in chronic cases) for stiffness of the muscles, severe arthralgia and joint immobility
3. Clears Heat and expels pus
   Soft, pustulated carbuncles, Lung and Intestinal abscess
4. Clears Damp-Heat
   Any Damp-Heat condition at any level with a greasy, white tongue coat and digestive problems
5. Aids fasting
   Mentioned in the Shen Nong Ben Cao Jing as part of the superior class of herbs which can, with protracted taking, make the body light and boost the Qi. This may suggest it was part of supplementing the diet when engaging in an "avoiding grain" (Bigu 辟穀) fasting regime to cultivate life (Yangsheng 養生). At ~70% carbohydrates (Zhu, 2017), this would represent one important source of of this nutrient class which could be had in the amounts that could be foraged, as opposed to farmed, to maintain this kind of diet long term. Its root is also suggested to expel the Three Worms.

Standard Dosage: 9-30g in decoction.

Pinyin: Gan Cao  Chinese: 甘草
Pharmaceutical: Radix Glycyrrhizae
Taxonomy: Glycyrrhiza uralensis seu glabra seu inflata
English: Liquorice Root

Tastes: Sweet, slightly cold
Meridians Entered: Heart, Lung and Spleen (and all 12 meridians)

Actions & Indications:

1. Tonifies the Spleen and augments Qi
   Spleen Qi Deficiency with shortness of breath, lassitude and loose stools
   Qi and Blood Deficiency with an irregular pulse and/or palpitations
   Heart Qi Deficiency or Heart Yang Deficiency
2. Moistens the Lungs, resolves Phlegm and stops coughing
   Lung Heat or Cold
   Productive or non-productive coughing
3. Moderates spasms and alleviates pain
   Painful muscle spasms of the abdomen and legs
4. Clears Heat and relieves Fire Toxicity
   Raw for Toxic Heat with sore throat or carbuncles and sores (Chuang Yung)
5. Antidote for many toxic substances (internal and topical)
   Poisoning
   Bites (after washing the wound, chew Gan Cao and apply a thick layer on the bite wound, changing whenever it dries out; Bao Xiang-Ao, 1846, New Compilation of Proven Formulas)
6. Moderates and harmonizes the harsh properties of other herbs and guides the herbs to all twelve channels
   Often added in small doses to harmonise formulas
7. Tonifies the Qi while suppressing Parasites
   Gu Sydnrome (Fruehauf, 1998)
   Chronic inflammatory disease (Fruehauf, 2015)
8. Aids fasting
   Mentioned in the Shen Nong Ben Cao Jing as part of the superior class of herbs which can, with protracted taking, make the body light and prolong life. This may suggest it was part of supplementing the diet when engaging in an "avoiding grain" (Bigu 辟穀) fasting regime to cultivate life (Yangsheng 養生).

Standard Dosage: Typically 1.5-9g in decoction. Large doses can be up 30g.
Cautions: It is contraindicated for combining with Hai Zao, Da Ji, Gan Sui and Yuan Hua because of "eighteen antagonisms". It is also contraindicated in cases of dampness obstruction in middle energizer and edema because it can help dampness obstruct qi, and it is prohibited from long-term usage in large dosage (more than 20g/day) and should be avoided or used with extreme caution in patients with high blood pressure because it may raise aldosterone levels in the blood causing retention of sodium.

The NHS recommends avoiding during pregnancy.